Go Sector 2-06 in Octo Canyon. At the entrance immediately after spawning, shoot the wooden box in front of you. Cover the ground and the platform below with ink, then swim through the ink and jump over to the bottom platform. Shoot the box on the right bottom area on that platform to get a food ticket. After collecting the food ticket, go to the menu, and return to Inkopolis Square. Repeat this process as many times as desired. You can only hold 99 tickets at a time. Use the tickets to buy unlimited Crusty Seanwiches from Crusty Sean, which boosts your experience earned in online battles by 50%. Note: This glitch was performed on an unpatched version of the game. It will probably eventually get patched. To avoid not being able to use this exploit, either do not install new patches before using this exploit or delete the patches. You can avoid patches being installed by disconnecting from the internet until you are ready for the game to install new patches.

Easy experience/coin tickets

Fully upgrade all the hero weapons in Single Player mode, including the Ink Tank and Bombs, to purchase coin tickets for 1,500 Power Eggs each.

Hero weapons

Successfully complete the indicated lair in Story mode to unlock the corresponding hero weapon in Story mode:

Hero Shot: Successfully complete Lair 1.

Hero Roller: Successfully complete Lair 4.

Hero Dualies: Successfully complete Lair 5.

Hero Charge: Successfully complete Lair 6.

Hero Slosher: Successfully complete Lair 10.

Hero Splatling: Successfully complete Lair 13.

Hero Blaster: Successfully complete Lair 19.

Hero Brella: Successfully complete Lair 20.

Hero Brush: Successfully complete Lair 22.

To unlock these weapons in Multiplayer mode, successfully complete all 27 lairs and five Boss fights in the campaign with a single hero weapon to unlock it in Multiplayer mode. Thus, you must complete all 27 lairs and five Boss fights in Story mode nine times to unlock all nine hero weapons.

Bonus weapons

Reach the indicated level in Multiplayer mode to unlock the corresponding weapon for purchase:

.52 Gal: Reach Level 14.

.96 Gal: Reach Level 21.

Aerospray MG: Reach Level 6.

Aerospray RG: Reach Level 28.

Blaster: Reach Level 5.

Carbon Roller: Reach Level 7.

Clash Blaster: Reach Level 30.

Custom Blaster: Reach Level 27.

Custom E-Liter 4K: Reach Level 30.

Custom E-Liter 4K Scope: Reach Level 30.

Dapple Dualies: Reach Level 26.

Dynamo Roller: Reach Level 20.

E-Liter 4K: Reach Level 20.

E-Liter 4K Scope: Reach Level 30.

Enperry Splat Dualies: Reach Level 11.

Firefin Splat Charger: Reach Level 16.

Firefin Splatterscope: Reach Level 25.

Flingza Roller: Reach Level 24.

Goo Tuber: Reach Level 22.

H-3 Nozzlenose: Reach Level 29.

Heavy Splatling: Reach Level 8.

Jet Squelcher: Reach Level 17.

Krak-On Splat Roller: Reach Level 12.

L-3 Nozzlenose: Reach Level 18.

Luna Blaster: Reach Level 19.

Mini Splatling: Reach Level 23.

N-Zap '85: Reach Level 9.

Octobrush: Reach Level 10.

Rapid Blaster: Reach Level 13.

Slosher: Reach Level 5.

Splash-o-Matic: Reach Level 25.

Splat Charger: Reach Level 4.

Splat Dualies: Reach Level 4.

Splat Roller: Reach Level 4.

Splatterscope: Reach Level 15.

Splattershot: Reach Level 2.

Splattershot Pro: Reach Level 10.

Tentatek Splattershot: Reach Level 4.

Tri-Slosher: Reach Level 15.

Amiibo unlockables

Successfully complete the single player campaign, then scan the indicated Amiibo to get the corresponding bonuses:

Callie

Perks

Faster Swimming

Faster Running

Faster Super Jump

Gear Unlock: Hero Replica Armor

Headgear

Clothing

Shoes

Inkling Boy (Blue)

Perks

Special Charge Up

Special Power Increase

Quick Super Jump

Gear Unlock: Samurai Amor

Headgear

Clothing

Shoes

Inkling Boy (Green)

Perks

Special Saver

Swimming Speed Boost

Faster Respawn

Gear Unlock: Squinja Armor

Headgear

Clothing

Shoes

Inkling Girl (Orange)

Perks

Ink Saver

High Recovery Speed

Faster Swimming

Gear Unlock: School Outfit Armor

Headgear

Clothing

Shoes

Inkling Girl (Red)

Perks

Enhanced resistance to ink and bombs

Gear Unlock: Power Armor MK1

Headgear

Clothing

Shoes

Inkling Squid (Green)

Perks

Faster Respawn

Higher Defense Against Bombs

Ink Saver

Gear Unlock: Power Armor

Headgear

Clothing

Shoes

Marie

Perks

Tenacity

Ink Saver

Special Charge Up

Gear Unlock: Armor Replica Outfit

Headgear

Clothing

Shoes

All Sunken Scrolls and Sardinium locations

Search the indicated locations to find all Sunken Scrolls and Sardinium in the game:

Respawn Punisher: Increase respawn time and special-gauge penalty for you and players who have splatted you.

Ability Doubler: Increase effect of gear abilities.

Stealth Jump: Hide Super Jump landing point.

Object Shredder: Boost damage against non-player targets.

Drop Roller: Perform a roll after a Super Jump.

Alternate online lobby music

When you are waiting to connect to a room while playing online, hold Up or Down on the Left Analaog-stick to change the pitch and tempo of the music. Hold Down on the Right Analog-stick to make the music sound muffled like you are underwater.